package org.madore.damlengine;

import java.util.ArrayList;
import org.w3c.dom.*;

public class TodoDefaultElement extends TodoElement {

    public static class Factory extends TodoElement.Factory {
	public TodoDefaultElement newItem(Element node,
					  TodoContext context,
					  TodoItem.Options options) {
	    return new TodoDefaultElement(node, context, options);
	}
    }

    public TodoDefaultElement(Element node,
			      TodoContext context,
			      TodoItem.Options options) {
	super(node, context, options);
    }

    public static ArrayList<Attr> getAttrList(Element node) {
	NamedNodeMap attrs = node.getAttributes();
	ArrayList<Attr> attrList = new ArrayList<Attr>(attrs.getLength());
	Node attr;
	for ( int i=0 ; (attr=attrs.item(i)) != null ; i++ )
	    attrList.add((Attr)attr);
	return attrList;
    }

    public static ArrayList<Node> getChildList(Element node) {
	NodeList children = node.getChildNodes();
	ArrayList<Node> childList = new ArrayList<Node>(children.getLength());
	Node child;
	for ( int i=0 ; (child=children.item(i)) != null ; i++ )
	    childList.add(child);
	return childList;
    }

    public void handleAttributes() {
	ArrayList<Attr> attrList = getAttrList(this.node);
	ArrayList<TodoAttr> toProcess = new ArrayList<TodoAttr>(attrList.size());
	for ( Attr attr : attrList ) {
	    TodoAttr it
		= TodoAttr.getTodoAttr(attr, this.node, this.context,
				       new TodoItem.Options());
	    if ( it != null )
		toProcess.add(it);
	}
	this.ownerDeque.registerAtStart(toProcess);
    }

    public void handleNodeOnly() {
	System.err.println("handling a "+this.node.getNodeName()+" element");
	ArrayList<Node> childList = getChildList(this.node);
	ArrayList<TodoElement> toProcess = new ArrayList<TodoElement>(childList.size());
	for ( Node child : childList ) {
	    if ( child.getNodeType() == Node.ELEMENT_NODE ) {
		TodoElement it
		    = TodoElement.getTodoElement((Element)child, this.context,
						 new TodoItem.Options());
		toProcess.add(it);
	    }
	}
	this.ownerDeque.registerAtStart(toProcess);
    }

    public void handle() {
	assert(this.ownerDeque != null);
	handleAttributes();
	handleNodeOnly();
    }

}